Watch the installation period
As checked on 12 September 2026, the regulator lists battery STC factors of 5.7 for January–June 2027 and 5.2 for July–December. These are not dollar rebates. Recheck the current rules and eligibility when quoting.
Sources: [1]
Set three review points
| When | Review |
|---|---|
| Before quoting | Current rules and installation assumptions |
| When dates change | Affected quote and customer commitments |
| Before confirming the job | Site readiness, equipment and crew |
Sources: [1]
Capacity tapering also applies: 100% for the first 14 kWh, 60% above 14–28 kWh and 15% above 28–50 kWh of usable capacity. Use the regulator’s calculator for the actual system.
Plan from your own pipeline
AEMO’s long-term plan offers market context, not a forecast of your sales. Build low, expected and high workload scenarios from your qualified enquiries and installation capacity. Track new solar, battery additions and combined systems separately.
Sources: [2]
Example: June becomes August
Illustrative example: an eligible 10 kWh battery moves from June to August 2027. The simple factor arithmetic changes from 57 to 52. This shows date sensitivity only; it is not a complete certificate or rebate calculation.
Protect the customer’s agreed offer
A changed incentive does not automatically let you change an agreed contract price. Check your obligations before proposing a variation. Future policy, tariffs and customer demand can change.
Keep the review with the job
Give each affected quote an owner and review date. ArcSolar combines AI bill analysis, savings estimates and provider-linked rebate tracking with customer calls and SMS. Book a demo to see how the team can review assumptions and follow up from the same job.
Sources and review (7)
Published by ArcSolar. Examples are illustrative; product details come from the sources below. Editorial standards.
- Clean Energy Regulator: solar batteries — Clean Energy Regulator; checked 12 September 2026.
- AEMO: final 2026 Integrated System Plan — AEMO; checked 12 September 2026.
- Clean Energy Regulator: accurate quotes and contract obligations — Clean Energy Regulator; checked 12 September 2026.
- Rebate and certificate tracking — ArcSolar; checked 12 September 2026.
- AI electricity bill assessment — ArcSolar; checked 12 September 2026.
- Savings estimator — ArcSolar; checked 12 September 2026.
- Browser calls and SMS — ArcSolar; checked 12 September 2026.